today I was coming home from a trip when all of the sudden the ac quit working. I checked the belt and it was ok. checked the fuses and the 7.5 amp was blown. replaced it and it blew right away. tried to add a little 134a from a can and the needle went to the red which means the ac system has other problems. seems I can smell something like a wire burning around the compressor. could it have just gave out all of the sudden? Is there anything else I should check out. I am not very educated on ac issues any help would be great. by the way the car is a 1993 325is 5 speed